High-reliability four-phase alternating current starting motor

A starter generator, reliability technology, applied to synchronous generators, synchronous motors for single-phase current, etc., to achieve the effect of fast speed, high reliability and low failure rate
CN103701286AActive Publication Date: 2014-04-02CHONGQING YIHU ENGINE MACHINERY
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING YIHU ENGINE MACHINERY
Publication Date
2014-04-02

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Abstract

The invention provides a high-reliability four-phase alternating current starting motor, which comprises end covers, a stator, a bearing, a magnetic yoke, an exciting winding, a position sensor and a rotor formed by a shaft and pawl poles; the rotor pawl poles are fixed on the pawl shaft; the number of the pawl poles is 4n-2 or 4n-4, wherein n in a natural number; the exciting winding inside the pawl poles is fixed on the end cover at one end of the motor by the magnetic yoke; the stator is positioned outside the rotor and has the pole number of 4n; centralized windings are arranged on stator poles; n stator coils in close phases are serially connected to form one phase; the four phases of stator windings are annularly connected end to end and are respectively connected onto middle points of four-phase bridge arms. The four-phase starting motor can be used both as a starter and a power generator; the reliability is high as the four-phase centralized stator windings are adopted; well voltage adjusting performance is realized by adopting a brushless electro-exciting structure and the high-reliability four-phase alternating current starting motor is suitable for being used on a vehicle idle speed halt system.
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Description

technical field

[0001] The invention relates to a highly reliable four-phase AC starter generator, which belongs to the technical field of automobile starter generators. Background technique

[0002] The starter generator can not only be used as a motor to start the engine, but also can be used as a generator to supply power to electrical equipment. It is a key component of new energy-saving vehicles such as hybrid vehicles and idle stop vehicles. With the development of automobile technology, the reliability requirements for key components of automobiles are getting higher and higher. A four-phase motor has four-phase windings. When one phase fails, the other three phases can continue to work, so the four-phase motor has higher reliability. At present, there are some starter generators using permanent magnet synchronous motors at home and abroad. However, permanent magnet motors do not have the ability to demagnetize quickly. When switching loads or encountering major faul...

Claims

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